Clock sign



FIG. 1 is a perspective view of the clock sign showing my new design;

FIG. 2 is a top plan view of clock sign showing my new design;

FIG. 3 is a bottom plan view of the clock sign of FIG. 1;

FIG. 4 is a side elevational view of the clock sign of FIG. 1;

FIG. 5 is a opposite side elevational view of the clock sign of FIG. 1;

FIG. 6 is a rear elevational view of the clock sign of FIG. 1; and,

FIG. 7 is a front elevational view of the clock sign of FIG. 1.

In the drawings, the broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a clock sign, as shown and described. 